/**
 * Layout push: an open panel occupies layout instead of floating over it.
 * The right panel reserves padding inside the AppFrame three-column grid,
 * so the app sidebar, conversation, and details column all remain to its
 * left while the frame's border-box stays viewport-wide. Harness measures
 * that border-box to choose desktop versus narrow presentation; preserving
 * it prevents a desktop window from entering narrow mode merely because the
 * plugin panel opened.
 *
 * AppFrame positions its details drag handle from the measured border-box.
 * Move that handle left by the same reserved width so it stays on the details
 * column edge. The ordinary sidebar handle remains at its native coordinate.
 *
 * The bottom panel squeezes only the conversation column. The anchor is the
 * [data-dsh-center-col] tag the Sidebar shell's locator writes on the
 * frame's measured center grid item (Sidebar.tsx locate — not a positional
 * path: the frame also contains an overlay layer and drag handles). A
 * stretched grid item shrinks by its bottom margin, so the conversation
 * output and composer lift without touching either sidebar.
 *
 * Sizes ride CSS variables updated by the Sidebar shell (0 while collapsed).
 * Expand/collapse uses the host theme duration; drags disable transitions so
 * every reserved edge tracks the pointer.
 */
/* Current shells expose [data-dsh-frame]; rc.8-era shells expose the same
   AppFrame only as the root slot's direct child. */
#root [data-dsh-frame],
#root > [data-slot="root"] > div {
  box-sizing: border-box;
  padding-right: var(--dsh-sidebar-width, 0px);
  transition: padding-right var(--ds-transition-duration-slow) var(--ds-ease-in-out);
}

#root [data-dsh-frame] > [data-side="details"],
#root > [data-slot="root"] > div > [data-side="details"] {
  transform: translateX(calc(0px - var(--dsh-sidebar-width, 0px)));
  transition:
    left var(--ds-transition-duration-slow) var(--ds-ease-in-out),
    transform var(--ds-transition-duration-slow) var(--ds-ease-in-out);
}

/* The AppFrame's center column. The Sidebar shell's locator (Sidebar.tsx
   locate/measureCenter) tags the measured column node with
   [data-dsh-center-col] — one attribute write per node lifetime. The rule
   used to anchor on a structural has()-selector over the conversation slot
   wrapper, whose match cache invalidates on every #root subtree mutation
   (the streaming chat mutates it constantly), re-evaluating the selector
   against the whole document; the tag is evaluated once per node instead.
   A stretched grid item shrinks by its margins, so the conversation
   content (output + input bar) lifts without touching the sidebars. */
#root [data-dsh-center-col] {
  margin-bottom: var(--dsh-sidebar-height, 0px);
  /* Grid/flex items default to min-height:auto. A long unbreakable token
     (OAuth URL) then grows this column past the viewport and clips the
     composer + left-rail Settings row. min-height:0 lets the cell shrink;
     overflow-wrap lets the token wrap instead of forcing its intrinsic
     size. The host's own descendants remain responsible for scrolling. */
  min-height: 0;
  overflow-wrap: anywhere;
  transition: margin-bottom var(--ds-transition-duration-slow) var(--ds-ease-in-out);
}

/* When the sidebar is collapsed, the toggle cluster reclaims the top-right
   corner. Push the DSH session header's right padding out so its right-aligned
   utilities (the "Session log" download capsule) yield the corner instead of
   hiding under the cluster. The header default right-pads 28px; the 2-button
   cluster spans right 10→70px, so 78px clears it with an 8px gap. Anchor on
   the header's slot host wrapper ([data-slot="conversation.session.header"])
   rather than a positional path: DSH 0.1.x nests the header several levels
   under the center column. The Sidebar shell toggles the body attribute with
   the panel open state. */
body[data-dsh-sidebar-collapsed] [data-slot="conversation.session.header"] > header {
  padding-right: 78px;
}

body[data-dsh-sidebar-dragging] #root [data-dsh-frame],
body[data-dsh-sidebar-dragging] #root > [data-slot="root"] > div,
body[data-dsh-sidebar-dragging] #root [data-dsh-frame] > [data-side="details"],
body[data-dsh-sidebar-dragging] #root > [data-slot="root"] > div > [data-side="details"],
body[data-dsh-sidebar-dragging] #root [data-dsh-center-col],
#root [data-dsh-frame][data-dragging] > [data-side="details"],
#root > [data-slot="root"] > div[data-dragging] > [data-side="details"] {
  transition: none;
}

/* DSH 0.1.x gives external settings sections a generic gear and exposes no
   icon field in the settings.section contract. settings-nav-icon.ts marks
   only this plugin's localized row; render the requested Lucide
   gallery-horizontal-end SVG as a currentColor mask so it follows the native
   nav hover/active colors without changing the shell's 16px icon rhythm. */
[data-dsh-better-sidebar-settings-nav] > svg:first-child {
  display: none;
}

[data-dsh-better-sidebar-settings-nav]::before {
  content: '';
  flex: none;
  width: 16px;
  height: 16px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 7v10'/%3E%3Cpath d='M6 5v14'/%3E%3Crect width='12' height='18' x='10' y='3' rx='2'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 7v10'/%3E%3Cpath d='M6 5v14'/%3E%3Crect width='12' height='18' x='10' y='3' rx='2'/%3E%3C/svg%3E") center / contain no-repeat;
}

@media (prefers-reduced-motion: reduce) {
  #root [data-dsh-frame],
  #root > [data-slot="root"] > div,
  #root [data-dsh-frame] > [data-side="details"],
  #root > [data-slot="root"] > div > [data-side="details"],
  #root [data-dsh-center-col] {
    transition: none;
  }
}

/* Context-menu submenu flip (viewport clamping for the portaled menus).
 *
 * The ui-primitives Menu clamps its main portal list into the viewport but
 * positions nested submenus with static CSS only — anchored at the parent
 * row's bottom, growing UP and to the RIGHT — with no clamp whatsoever.
 * Docked on the window's right edge, both defaults are the worst case for
 * this panel: a tall "open with" submenu escapes past the viewport top when
 * the row menu opens near the top, and past the right edge on narrow panels
 * (PANEL_MIN 280 < card 218 + gap + submenu 165).
 *
 * menu-flip.ts publishes `data-dsh-sidebar-submenu` on <body> — with the
 * words "down" and/or "left" — for exactly the lifetime of one of OUR
 * submenu-bearing menus (FileTree row menu, TabBar tab menu). The tokens
 * flip the growth direction; the attribute's absence restores the
 * primitive's own geometry untouched, and host-owned menus are never
 * affected because they never open while the attribute exists (each side
 * closes on the other's outside pointerdown).
 *
 * No max-height/overflow scroll cap here on purpose: overflow clipping
 * would cut the submenu's ::before hover bridge (the corridor that keeps
 * itemWrap's mouseleave from closing the card mid-crossing). */

/* Visual tether, part 1 — the parent row stays lit while its submenu is
 * open. The primitive only styles :hover, so once the pointer crossed into
 * the side card the parent row's fill cleared and the floating card read as
 * unrelated. The Menu marks the open parent row with aria-expanded="true"
 * (host-rendered, stable), so the same hover token re-applies for the
 * submenu's whole lifetime. */
body[data-dsh-sidebar-submenu] div[role="menu"] button[aria-expanded="true"] {
  background: var(--dsw-alias-interactive-bg-hover);
}

/* Visual tether, part 2 — the side card hugs its parent (10px → 4px gap),
 * with the ::before hover corridor narrowed to match. Ordered BEFORE the
 * flip overrides below so their left/right flips still win. */
body[data-dsh-sidebar-submenu] div[role="menu"] div[role="menu"] {
  left: calc(100% + 4px);
}

body[data-dsh-sidebar-submenu] div[role="menu"] div[role="menu"]::before {
  left: -4px;
  width: 4px;
}

body[data-dsh-sidebar-submenu~="down"] div[role="menu"] div[role="menu"] {
  top: -4px;
  bottom: auto;
}

body[data-dsh-sidebar-submenu~="left"] div[role="menu"] div[role="menu"] {
  left: auto;
  right: calc(100% + 4px);
}

/* The hover bridge follows the card to the left side of the parent row. */
body[data-dsh-sidebar-submenu~="left"] div[role="menu"] div[role="menu"]::before {
  left: auto;
  right: -4px;
}